bench wiring question

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Forum topic by Karda posted 12-27-2017 05:23 AM 656 views 0 times favorited 6 replies Add to Favorites Watch
View Karda's profile


2351 posts in 1355 days

12-27-2017 05:23 AM

only have one receptacle in my shop, old house, the receptacle is 20 amp because my table saw is 15 amp and I wanted a big enough breaker for it and lights. What i want to do is attach the extension cord to the saw to my work bench. The cord is 12/3 i replaced the male end with a steel junction box with a receptacle. I want to bolt it to my steel bench legs would that be safe. The shop wiring in new directly from the box thanks

6 replies so far

View Carloz's profile


1147 posts in 1392 days

#1 posted 12-27-2017 10:31 AM

You’ll be fine but I personally would not do it. A regular plug is so much more flexible as you can disconnect it whenever you need to. Plus a permanently attached device qualifies as a modiification to your electric circuit. Which brings legal responsibility, need for a permit etc.

View Karda's profile


2351 posts in 1355 days

#2 posted 12-27-2017 07:10 PM

i want it up off the floor, and it is a n electrical box on a 12/3 extension cord, it is not hard wired.

View MrUnix's profile


8147 posts in 3000 days

#3 posted 12-27-2017 08:01 PM

It’s not a problem… all you are doing is making an extension cord. I have several machines with attached gang boxes on them… wall plug powers the machine + gang box.


-- Brad in FL - In Dog I trust... everything else is questionable

View WhyMe's profile


1290 posts in 2362 days

#4 posted 12-27-2017 09:02 PM

Just make sure the cords ground is pigtailed to the box since it’s metal. Don’t rely on the outlet fastened to the box to provide a good ground to the box.

View MT_Stringer's profile


3183 posts in 4032 days

#5 posted 12-27-2017 09:13 PM

I have a junction box similar to yours that I mounted on a piece of 1/2 inch plywood. With the plywood screwed to my bench, I feel it is pretty safe.

It has a switch and a receptacle so I can start my shop vac without having to get under the bench to reach the on/off switch on the shop vac. One end of the extension cord plugs into an standard outlet. The shop vac plugs into the outlet on the box and is controlled by the switch. It had been working just fine for the last 3-4 years.

-- Handcrafted by Mike Henderson - Channelview, Texas

View Karda's profile


2351 posts in 1355 days

#6 posted 12-27-2017 09:26 PM

ok thanks I just wanted to make sure I was doing it safely, I am allergic to electric shock, don’t like them at all

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